Locking device for vehicles



C. C. EPPS.

LOCK|NG DEVICE FOR VEHICLES.

APPLICATION Flu-:D MAY 5, 1919. 9S795 Ptell'd pl. 26, l92l.

C. c. EPPS.

LOCKING DEVICE FOR VEHICLES.

APPLICATION FILED MAY 5, 1919. L'., Patented Apr. 269 MEL 2SHEIETS-SHEET 2 Wfl/11111111 L, Z ,1 Wm, AAL kN j Wm. N f j @M/ mw, w w@Q L .m .Q wm @WWW M my uw un w MP S@ w WN f @JQ m L@ u mw w www .ww J L@Nm CW @L M MN] UNITED STATES CLINTON C. EIPS, OF BRISTOW, OKLAHOMA.

LOCKING DEVICE FOR VEHICLES.

Specication of Letters Patent.

Patented Apr. 26, 1921.

Application led May 5, 1919. Serial No. 294,786.

To all whom t may concern:

Be it known that I, CLINTON C. Frrs, a citizen of the United States ofAmerlca, and a resident of Bristow, in the county of Creek and State ofOklahoma, have invented certain new and useful Improvements in LockingDevices for Vehicles, of which the following is a specification.. I

The primary object of this invention is to provide an improved lockingmechanismI for locking the power transmitting parts of an automobiledrivin mechanism. j

Another object is to provide an improved locking device for locking thetransmission gearing of a self propelled vehicle.

A further object is in providing an improved locking device which'whilelocking the transmission gearing against movement will also prevent thedriving clutch from being withdrawn from clutchmg position relative tothe motor of a vehlcley so that the motorcannot be started. n

Other and further objects will appear in the specification and bespecifically pointed out in the appended claims, reference being had tothe accompanying drawings exemplifying the invention, and in which,

Figure 1 is a fragmentary side elevation, partly in section, showingportions of an internal combustion motor and the power transmittingparts related thereto.

Fig. 2 is -a horizontal section taken ap-l proximately on the lineII--II of Fig. 1.

Fig. 3 is a fragmentar transverse section ltaken on the lineII -III ofFig. 2.l

Fig. 4 is al fragmentary vertical section;v taken on the line IV-IV ofFig: 1. s

Fig. 5 is a fragmentary vertical Section taken on the line V-V of Fig.3.

As already stated in the aforementioned objects, this improvedinventionpertains to the locking of the power transmitting parts of aself propelled vehicle so that the'vehicle cannot be moved by anunauthorlzed person, and in order to disclose the cooperative relationof `the locking device to the transmitting parts with reference to thedrawin s, a motor 1 is shown, having the usual y wheel housing 2, and'secured to said housing rearwardly thereof 1s the clutch housing 3, andformed integral with the clutch housing is the transmission casing 4.Extending from the motor 1 into the fly wheel housing 2 is the motorpower or crank shaft 5, and mounted on said shaft is the fly wheel 6having a centrally arranged clutching mouth 7. Alining with the motorshaft 5 is a clutch shaft 8, having the usual keys 9 formed integraltherewith, said shaft at one end extendingy into the transmissiongearlng case 4 and being supported in a bearing 10.

Slidably mounted on the keys 9 of the clutch` shaft 8- is a clutch 11,and in engagement with the annular recess 12 of said clutch are a pairof opposing pins 13 which lare carrled by a yoke 14, which is swinginglymounted at l5. Formed on the lower end of said yoke adjacent one of thepins 13 is an extending portion 16. Securely mounted to the clutch shaft8 and located in the transmission casing 4 is a driving pinion 17, saidpinion being the rst tooth gear in order relative Ito the train ofgearing, not shown, which is contained in the transmission casing 4.Formed in one end of the plnion 17 is a counter bore 18 which is for thereception of an annular shoulder 19 which is secured to the transmissiondriving shaft 20, said shaft 20 being in alinement wlth Ithe clutchshaft 8, andl carries a plurality of keys 21, said keys being for thereception of a sliding high gear 22 Yhaving external teeth 23 andinternal teeth 24, said internal teeth being adapted to mesh with theteeth of the pinion 17.

Related to the gear 22 is a shift-ing mechanism 25. Formed in thevertical wall 26 of the transmission casing 4 is a pocket 27 having abottom wall 28 and a top wall 29,

and formed in each of said walls is a bearing 30, and mounted in saidbearings is a vertically extending turnable member 31, having a turningcrank 32 formed at its up1per end.

coated 1n the pocket 27 and secured to the member 31 by a key 33 is agear segment 34, bearing teeth 35 that are adapted to mesh with theteeth 23 of the gear 22.

Formed in the under side of the segment 34 is a recess 36, and mountedin said recess is a-locking bolt 37, said bolt being secured to one endof a lifting rod 38 which is reciprocally mounted inside of the turnablemember 31, the upper end of said rod being mounted on a lifting pin 39of the turning drum 40 which forms part of a pin lock 41 which ismounted in the member 31 adjacent the turning crank 32.

Formed in the front wall 42 of the transmission casing 4 is a bearing43, and reciprocally mounted in said bearing is a springt, actuated pushrod 44, one end of said push rod extending into said casing, Whereas theopposite end of said rod is adapted to engage against the extendingportion 16 of the clutch yoke 14.

In the operation of this improved locking device, when the motor andpower transmitting parts related thereto are in runnin condition, thegear segment 34 is locate in the pocket 37 of the transmission casing 4`as shown by the dotted lines in Fig. 2.

As is the usual custom with the majority of automobiles, when the motoris stop ed and the automobile is to be left standing the powertransmitting parts are generally thrown in high gear, 1n which the gea-r22 will be in mesh with the pinion 17, whereas the clutch 11 is inclutching engagement with the fly wheel 6, in which vosition thisimproved. lockingl device is adlipted to be manipulated. This lockingoperation is brought about by the operator turning the drum 40 of thepin lock 41 with the key, so that the lifting rod 38 will be movedupwardly, thereby withdrawing the locking bolt 37 from engagement withthe socket 45 provided in the bottom wall 28 of the pocket 27, therebyunlocking the gear segment 34 so it can be turned. The turning crank 32,which is located adjacent the operator is then manipulated to the right,thereby turning the teeth bearing endof the gear segment 34 into thetransmission casing 4 so that the teeth 35 of said segment will meshwith the teeth 23 of vthe gear 22, the shoulder 46 of said segmentpreventing the segment from being turned out of mesh with the gear teeth23, and will therefore provide a stop for said segment.

In this position of engagement of the segment 34 with the gear 22, thelocking bolt 37 will be in alinement with the locking socket or opening47, which is also formed in the bottom wall 28 of the segment pocket 27,and inasmuch as the lifting rod 38 of said locking bolt is susceptibleof being actuated by the spring 48 which is carrled by the lower end ofthe lifting rod 38, the locking bolt 37 will be forced downward into thesocket 47, th'ereby holding the gear segment 34 in locked positionrelative to the high gear 22, there-l by locking the transmissiondriving shaft 20 against movement.

Incidental with the inward locking movement of the gear segment 34, theextending end of the pushing rod 44 was engaged and moved forward untilthe opposite end of. said rod 44 engaged against the extending portion16 of the clutch oke 14,-and inasmuch as the clutch 11, W ichiscoperable with said yoke was previousl moved in clutching positionrelative to t e iy wheel G of the motor, said yoke will bc held in itsforwardly 'moved position by the push rod 44 when the gear segment 34/is in locked meshing position with the high gear 22.

From the aforesaid operation it is therefore to be noted that all of thepower transmitting parts of a self propelled vehicle' so thatI it couldbe moved to a clutching pov sition with the ily wheel of the motor, anunauthorized person couldthen start the motor, and throw in the clutch,and while the vehicle could not be moved on account of the transmissiongearing being locked, injury would be given to the clutch on account ofthe friction which would be created between the clutch mouth and the ilywheel when the clutch would be thrown into engagement with the ilywheel.l

Furthermore, injury. might be given to the transmission gearing onaccount of the over exertion of the power which would be transmittedthrough the clutch shaft 8 to the transmission.

In order to secure the transmission casing 4 against being tampered withso that the cover plate 48 thereof cannot be removed relative to thecasing being entered so as to disengage the gear segment 34 from thegear 22, a depending lip 49 is `provided on said cover plate which isadapted to be over engaged by the upwardly extending projection 50 whichis carried by a gear segment 34, said lip 49 of the cover `plate beingengaged by the projection Q50 when the segment 34 is moved into meshingposition with the gear 22; and for coperation with the lip 49 of thecover plate, an oppositely disposed depending 11p 51 is also provided onsaid cover plate which is adapted to under engage the projection 52formed on the wall 53 of the transmission casing 4. This engaging of theprojection` 50 with the lip 49 of the cover plate will prevent saidcover plate from being removed when the device is in looked position,even if the cap screws 54 of the cover plate were' removed.

From the aforesaid description of the locking of the cover plate 48, itis obvious that the cover plate can be removed when the gear segment 34is moved to an unlocked position. f

What I claim is:

1. A locking device for the transmission gearing of an internalcombustion motor comprisin a rotatable member, a turning bar there or,said member adapted to be swung into engagement with one of the gears ofsaid transmission gearing, a locking bolt carried by said member, andmeans extending through said bar for operating said locking bolt toSecure said member in its operative position.

2. In a locking device, the combination of a transmission gear, aclutch, a member for engagement with the teeth of said gear, means forlocking said member in its operative position and means coperable'withsaid member and said clutch whereby said clutch is prevented from beingwithdrawn from clutching engagement.

3. In a locking device, the combination of a transmission gear, a clutchand a member for engagement with said gear, said member being rotatablymounted so that it can be moved into meshing engagement with said gear,means for securing said rotatable meinber in its operative andinoperative positions, and a second member to be actuated by said firstmentioned member for engagement with said clutch for holding said clutchagainst movement.

4. In a locking device, the combination of a power transmitting part, aclutch, a member for engagement with said part, locking means for saidmember and means coperable with said member and said clutch whereby saidlutch is revented from being Withdrawn from clutc ing engagement.

5. The combination of a locking device with the transmission gear of aninternal combustion motor, said locking device comprising a rotatablymounted gear segment, an operating member for said segment, said gearsegment adapted to be swung into engagement with one of the gears ofsaid transmission gearing, a casing for supporting said segment, alocking bolt carried by the segment adapted for engagement with saidcasing to secure said segment in its adjusted positions and meansextending lsion gear and housing of a locking device,

said locking device comprising a rotatably mounted segment supportedwithin said housing for engaging said gear, locking means for saidsegment, a removable cover plate for said housing, an operating memberfor said rotatable segment, a depending lip formed on said cover plateand means carried by said rotatable segment for engaging said lip whenthe segment is in its o erative position, substantially as and for t epurpose set forth.

8. An arrangement of the class described comprisingthe combination witha transmission gearing and clutc h of a locking device, said devicecomprising a rotatably mounted segment adapted to be swung intoengagement with one of the gears of said transmission gearing, lockingmeans for said segment, an operating bar for said segment, a ush barslidably supported with one end adiiacent said rotatable segment, meanswhereby the other end of said push b ar engages said clutch, wherebywhen said rotatable segment is moved to its operative position said pushbar is actuated to prevent movement of the clutch, substantially as andfor the purpose described.

CLINTON C. EPPS.

